NEWS 81.3 KB
Newer Older
1
GNU Emacs NEWS -- history of user-visible changes.
2

Glenn Morris's avatar
Glenn Morris committed
3
Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
4
See the end of the file for license conditions.
Dave Love's avatar
#  
Dave Love committed
5

6
Please send Emacs bug reports to emacs-pretest-bug@gnu.org.
7 8
If possible, use M-x report-emacs-bug.

9
This file is about changes in Emacs version 23.
10

11 12
See files NEWS.22, NEWS.21, NEWS.20, NEWS.19, NEWS.18, and NEWS.1-17
for changes in older Emacs versions.
13 14 15

You can narrow news to a specific version by calling `view-emacs-news'
with a prefix argument or by typing C-u C-h C-n.
16

17 18 19 20 21 22 23 24

Temporary note:
 +++ indicates that the appropriate manual has already been updated.
 --- means no change in the manuals is called for.
When you add a new item, please add it without either +++ or ---
so we will look at it and add it to the manual.


25 26 27 28 29 30 31 32 33 34
* Installation Changes in Emacs 23.2

** New configure options for Emacs developers
These are not new features; only the configure flags are new.

*** --enable-profiling builds Emacs with profiling enabled.
This might not work on all platforms.

*** --enable-checking[=OPTIONS] builds emacs with extra runtime checks.

35 36
* Changes in Emacs 23.2

37 38 39 40 41 42
** The default value of `trash-directory' has changed to nil, which
means that `move-file-to-trash' trashes files according to
freedesktop.org specifications, the same method used by the Gnome,
KDE, and XFCE desktops.  (This change has no effect on Windows, which
uses `system-move-file-to-trash' for trashing.)

43 44 45 46 47
+++
** Emacs frames can be maximized.
The command line arguments -mm/--maximized and the value maximized to the
frame parameter fullscreen makes the Emacs frame maximized.

Jan Djärv's avatar
Jan Djärv committed
48 49 50
+++
** New frame parameter sticky makes Emacs frames sticky in virtual desktops.

51 52 53
** The pointer now becomes invisible when typing.
Customize make-pointer-invisible to turn it off.

54 55 56 57
---
** On MS-Windows, `display-time' now displays the system load average
as well as the time, as it does on GNU and Unix.

58 59 60 61 62
** Killing a buffer with a running process now asks a confirmation.
You can remove this query in two ways: either removing
`process-kill-buffer-query-function' from `kill-buffer-query-functions' or
setting the appropriate process flag with `set-process-query-on-exit-flag'.

63
+++
64 65 66 67 68
** If `select-active-regions' is t, any active region automatically
becomes the primary selection (for interaction with other window
applications).  If you enable this, you might want to bind
`mouse-yank-primary' to Mouse-2.

69 70 71 72 73 74 75
** The variable `load-in-progress' won't get corrupted by binding it
with `let'.  In certain situations, loading an Emacs Lisp file from
source while in the midst of loading another file (e.g., with
`require' or `autoload') could cause the value of `load-in-progress'
to be corrupted once the outer load completed.  Most code doesn't care
about this, but some (like c-mode) may check it.

76 77 78
** When `save-interprogram-paste-before-kill' is non-nil, emacs will not
clobber the the interprogram paste when something is killed in it by
saving the former in the `kill-ring' before the latter.
Glenn Morris's avatar
Glenn Morris committed
79

80 81
** When `kill-do-not-save-duplicates' is non-nil, identical subsequent
kills are not duplicated in the `kill-ring'.
Glenn Morris's avatar
Glenn Morris committed
82

83 84 85 86 87 88 89 90 91 92 93 94 95 96 97
** File-local variable changes

*** Specifying a minor mode as a local variables enables that mode,
unconditionally.  The previous behavior, toggling the mode, was
neither reliable nor generally desirable.

*** New commands for adding and removing file-local variables:
`add-file-local-variable', `delete-file-local-variable',
`add-file-local-variable-prop-line', and
`delete-file-local-variable-prop-line'.

*** New commands for adding and removing directory-local variables,
and copying them to and from file-local variable lists:
`add-dir-local-variable', `delete-dir-local-variable',
`copy-dir-locals-to-file-locals',
98 99 100
`copy-dir-locals-to-file-locals-prop-line' and
`copy-file-locals-to-dir-locals'.

101 102 103 104
** New coding system `utf-8-hfs' is available in
international/ucs-normalize.el.  It is suitable for
default-file-name-coding-system on Mac OS X.

Glenn Morris's avatar
Glenn Morris committed
105 106 107 108 109 110

* Editing Changes in Emacs 23.2

+++
** The default value for `blink-matching-paren-distance' has been increased.

111 112 113

* Changes in Specialized Modes and Packages in Emacs 23.2

114 115 116 117
** Calc graphing commands (`g f' etc.) now work on MS-Windows,
if you have the native Windows port of Gnuplot version 3.8 or later
installed.

Glenn Morris's avatar
Glenn Morris committed
118 119 120
** FIXME mail-user-agent change
This probably affects a lot of documentation.

Glenn Morris's avatar
Glenn Morris committed
121 122
** FIXME gdb-mi

123 124 125 126 127
** Info

*** The new command `Info-virtual-index' bound to "I" displays a menu of
matched topics found in the index.

Juri Linkov's avatar
Juri Linkov committed
128 129 130 131
*** The new command `info-finder' replaces finder.el with a virtual Info
manual that generates an Info file which gives the same information
through a menu structure.

132 133
+++
** New connection methods in Tramp.
134 135 136
The new connection method "rsyncc" has been introduced.  On systems
which support GVFS-Fuse, Tramp offers also the new connection methods
"dav", "davs", "obex" and "synce".
137

138 139 140 141
+++
** Autorevert Tail mode
Autorevert Tail mode works now for remote files.

142 143 144 145
** VC and related modes

*** When a file is not found, VC will not try to check it out of RCS anymore.

Dan Nicolaescu's avatar
Dan Nicolaescu committed
146 147 148
*** vc-git changes

**** The new variable vc-git-add-signoff can be used to add a
Dan Nicolaescu's avatar
Dan Nicolaescu committed
149 150
Signed-off-by line when committing.

Dan Nicolaescu's avatar
Dan Nicolaescu committed
151 152
**** vc-dir displays the stash status

153 154 155
*** log-edit-strip-single-file-name controls whether or not single filenames
are stripped when copying text from the ChangeLog to the *VC-Log* buffer.

Glenn Morris's avatar
Glenn Morris committed
156 157 158 159 160 161
** Calendar and diary

---
*** The command `calendar-current-date' accepts an optional argument
giving an offset from today.

162 163 164
** Desktop

---
165 166 167 168 169 170
*** The default value for `desktop-buffers-not-to-save' is nil.
This means Desktop will try restoring all buffers, when you restart
your Emacs session.  Also, `desktop-buffers-not-to-save' is only
effective for buffers that have no associated file.  If you want to
exempt buffers that do correspond to files, customize the value of
`desktop-files-not-to-save' instead.
171

172 173 174 175 176 177
** Miscellaneous

*** The new command `async-shell-command' bound globally to `M-&' executes
the command asynchronously without the need to manually add ampersand to
the end of the command.  Its output appears in the buffer `*Async Shell
Command*'.
Glenn Morris's avatar
Glenn Morris committed
178 179 180 181

---
*** Elint now uses compilation-mode, and recognizes more built-in
functions and variables.
Steve Yegge's avatar
Steve Yegge committed
182 183 184 185


* New Modes and Packages in Emacs 23.2

186
** js.el is a new major mode for JavaScript files.
187 188 189 190


* Lisp changes in Emacs 23.2

191 192 193
** All the default-FOO variables that hold the default value of the FOO
variable, are now declared obsolete.

194 195
** read-key is a function halfway between read-event and read-key-sequence.
It reads a single key, but obeys input and escape sequence decoding.
196

197 198
** start-process-shell-command start-file-process-shell-command only
take a single `command' argument any more.
199 200 201 202 203

** The variable `process-file-side-effects' shall be bound to nil, if
a `process-file' call does not change a remote file.  By this, file
name handlers like Tramp can apply optimizations.

204 205 206
** Hash tables have a new printed representation that is readable.
The feature `hashtable-print-readable' identifies this new
functionality.
207 208 209 210 211 212 213 214

** Functions performing Unicode normalization are added.  They are:
ucs-normalize-NFD-region, ucs-normalize-NFD-string,
ucs-normalize-NFC-region, ucs-normalize-NFC-string,
ucs-normalize-NFKD-region, ucs-normalize-NFKD-string,
ucs-normalize-NFKC-region, ucs-normalize-NFKC-string,
ucs-normalize-HFS-NFD-region, ucs-normalize-HFS-NFD-string,
ucs-normalize-HFS-NFC-region, ucs-normalize-HFS-NFC-string.
215

216

217
* Installation Changes in Emacs 23.1
218

219
** The default X toolkit is now Gtk+, rather than Lucid.
Chong Yidong's avatar
Chong Yidong committed
220 221
The configure option `--with-gtk' has been removed.  Gtk is now the
default toolkit, but you can use --with-x-toolkit=gtk if necessary.
222

Chong Yidong's avatar
Chong Yidong committed
223 224
** New font code.
Fonts are handled by new code capable of dealing with multiple font
225
backends.  This uses the freetype and fontconfig libraries.
226

Chong Yidong's avatar
Chong Yidong committed
227 228
*** Emacs now accepts font names supplied in the fontconfig format
(e.g. "monospace-12:bold") and GTK format (e.g. "Monospace Bold 12").
Dan Nicolaescu's avatar
Dan Nicolaescu committed
229

Chong Yidong's avatar
Chong Yidong committed
230 231 232 233 234 235 236 237 238
*** Added support for local fonts (fonts installed on the machine
where Emacs is running).

*** Added support for the Xft library for antialiasing.

*** Added support for the otf library for complex text layout by
OpenType fonts.

*** Added support for the m17n library for text shaping.
239

Chong Yidong's avatar
Chong Yidong committed
240
** Changes to image support
241

Chong Yidong's avatar
Chong Yidong committed
242
*** configure now checks for libgif before libungif when searching for
243
a GIF library.
244

Chong Yidong's avatar
Chong Yidong committed
245 246
*** Emacs now supports the SVG image format through librsvg2.

Jason Rumney's avatar
Jason Rumney committed
247 248
*** Emacs now supports multi-page TIFF images.

Chong Yidong's avatar
Chong Yidong committed
249
** New NeXTSTEP-based port
Glenn Morris's avatar
Glenn Morris committed
250
This provides support for GNUstep (via the GNUstep libraries) and Mac
Michael Albinus's avatar
Michael Albinus committed
251
OS X (via the Cocoa libraries).
252

Glenn Morris's avatar
Glenn Morris committed
253
Specify --with-ns to configure for this.  By default, a self-contained
254 255 256
app will be built (containing all lisp).  To install/share lisp with
other emacsen (e.g. X11 build) use --disable-ns-self-contained.  See
nextstep/README and nextstep/INSTALL in the Emacs source directory.
Chong Yidong's avatar
Chong Yidong committed
257 258 259

** Mac OS X is no longer supported via Carbon.
Use the NeXTSTEP port, described above.
Glenn Morris's avatar
Glenn Morris committed
260

Chong Yidong's avatar
Chong Yidong committed
261 262
** The new configuration option "--with-dbus" enables D-Bus language
bindings for Emacs.
263

264 265
** Support for many obsolete platforms has been removed.
See the list at the end of etc/MACHINES for details.
266

Chong Yidong's avatar
Chong Yidong committed
267
*** Support for systems without alloca has been removed.
268

Chong Yidong's avatar
Chong Yidong committed
269
*** Support for Sun windows has been removed.
270

Chong Yidong's avatar
Chong Yidong committed
271
*** The `emacstool' utility has been removed.
Chong Yidong's avatar
Chong Yidong committed
272

Chong Yidong's avatar
Chong Yidong committed
273
** The following platforms will be removed in a future Emacs version:
274 275
If you are still using Emacs on one of these platforms, please email
emacs-devel@gnu.org to inform the Emacs developers.
Chong Yidong's avatar
Chong Yidong committed
276

277
*** Old GNU/Linux systems based on libc version 5.
Chong Yidong's avatar
Chong Yidong committed
278

279 280
*** Old FreeBSD, NetBSD, and OpenBSD systems based on the COFF
    executable format.
Chong Yidong's avatar
Chong Yidong committed
281 282 283

*** Solaris versions 2.6 and below.

284 285 286 287
*** Solaris on IBM RS6000 machines.

*** UNIX System V (the original SysV, not later platforms based on it).

288 289
*** Unixware on non-x86 machines.

290 291
*** Platforms not supporting shared libraries (i.e., requiring the
NO_SHARED_LIBS compilation flag).
Chong Yidong's avatar
Chong Yidong committed
292

293 294 295 296
** The configure options `--with-gcc', `--without-gcc' have been removed.
Configure will use gcc by default.  Set the CC environment variable if
you need control over which C compiler is used.

Chong Yidong's avatar
Chong Yidong committed
297 298
** The refcards are now shipped as PDF files.

Glenn Morris's avatar
Glenn Morris committed
299 300 301
** The manuals are now licensed under the GNU Free Documentation License v1.3,
or any later version.

Chong Yidong's avatar
Chong Yidong committed
302 303 304
** Emacs 23 comes with a new set of default icons.
Various resolutions are available as etc/images/icons/hicolor/*/apps/emacs.png.
The Emacs 22 icon is available as `emacs22.png' in the same location.
Nick Roberts's avatar
Nick Roberts committed
305 306 307

* Changes in Emacs 23.1

Chong Yidong's avatar
Chong Yidong committed
308
** Improved X Window System support
309

Chong Yidong's avatar
Chong Yidong committed
310 311 312 313 314
*** Emacs now supports using both X displays and ttys in one session.
With an Emacs server active (M-x server-start), `emacsclient -t'
creates a tty frame connected to the running emacs server.  You can
use any number of different ttys.  `emacsclient -c' creates a new X11
frame on the current $DISPLAY (or a tty frame if $DISPLAY is not set).
315 316
There may be problems if a display exits unexpectedly and Emacs is compiled
with Gtk+, see etc/PROBLEMS.
317 318 319

You can test for the presence of this feature in your Lisp code by
testing for the `multi-tty' feature.
320 321

*** Emacs starts in the background, as a daemon, when given the
322 323 324
--daemon command line argument.  It disconnects from the terminal and
starts the server.  Clients can connect and create graphical or
terminal frames using emacsclient.
325

326
**** emacsclient starts emacs in daemon mode and connects to it when
327 328
--alternate-editor="" is used (or when the evironment variable
ALTERNATE_EDITOR is set to "") and emacsclient cannot connect to an
329 330
emacs server.

Chong Yidong's avatar
Chong Yidong committed
331
*** The new command close-display-connection closes a connection to a
332
remote display.  There are some bugs for Gtk+.  See etc/PROBLEMS.
333

Chong Yidong's avatar
Chong Yidong committed
334 335 336
*** Emacs now supports the XEmbed specification.
You can embed Emacs in another application on X11.  The new command line
option --parent-id is used to pass the parent window id to Emacs.  See
Jan Djärv's avatar
Jan Djärv committed
337 338
http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
for details about XEmbed.
339

Chong Yidong's avatar
Chong Yidong committed
340 341 342
*** Emacs can now set the frame opacity.
The opacity of a frame can be controlled by setting the `alpha' frame
parameter.  This only takes effect on a compositing window manager for
343 344
the X Window System, such as Compiz, Beryl and Compiz Fusion, on Mac
OS X, or on Windows 2000 and later versions of Windows.
345 346

The alpha parameter should be an integer between 0 (transparent) and
Chong Yidong's avatar
Chong Yidong committed
347 348
100 (opaque), or a float number between 0.0 and 1.0.  It can also be a
cons cell (ACTIVE . INACTIVE), where ACTIVE is the opacity of an
349
active frame and INACTIVE is the opacity of non-active frames.
350

Chong Yidong's avatar
Chong Yidong committed
351 352
The variable `frame-alpha-lower-limit' defines a lower bound for the
opacity; the default is 20.
353

Chong Yidong's avatar
Chong Yidong committed
354
** Internationalization changes
355

Chong Yidong's avatar
Chong Yidong committed
356 357
*** The Emacs character set is now a superset of Unicode.
(It has about four times the code space, which should be plenty).
Stefan Monnier's avatar
Stefan Monnier committed
358

Chong Yidong's avatar
Chong Yidong committed
359
The internal encoding used for buffers and strings is now
360 361 362 363
Unicode-based and called `utf-8-emacs' (`emacs-internal' is an alias
for this).  This encoding is backward-compatible with Unicode's UTF-8
encoding.  The internal encoding previously used by Emacs,
`emacs-mule', is still available for reading and writing files.
Nick Roberts's avatar
Nick Roberts committed
364

Chong Yidong's avatar
Chong Yidong committed
365 366 367
During byte-compilation, Emacs 23 uses `utf-8-emacs' to write files.
As a result, byte-compiled files containing non-ASCII characters can't
be read by earlier versions of Emacs.  Files compiled by Emacs 20, 21,
368 369 370 371
or 22 are loaded correctly as `emacs-mule' (whether or not they
contain multibyte characters).  This takes somewhat more time, so it
may be worth recompiling existing .elc files which don't need to be
shared with older Emacsen.
372

Chong Yidong's avatar
Chong Yidong committed
373
*** There are new coding systems/aliases; see M-x list-coding-systems.
374

Chong Yidong's avatar
Chong Yidong committed
375 376 377
*** There is a new charset implementation with many new charsets.
See M-x list-character-sets.  New charsets can be defined conveniently
as tables of unicodes.
Dan Nicolaescu's avatar
Dan Nicolaescu committed
378

Chong Yidong's avatar
Chong Yidong committed
379 380 381
*** There are new language environments for Chinese-GBK,
Chinese-GB18030, Khmer, Bengali, Punjabi, Gujarati, Oriya, Telugu,
Sinhala, and TaiViet.
382

Chong Yidong's avatar
Chong Yidong committed
383 384
*** The minor modes unify-8859-on-encoding-mode and
unify-8859-on-decoding-mode are obsolete.
385

386 387 388
*** `ucs-insert' is bound to `C-x 8 RET' and in addition to hex numbers
accepts numbers in hash notation (e.g. #o21430 for octal, or #10r8984 for
decimal).  It also accepts Unicode character names with completion.
389

390 391 392 393 394
*** The `cyrillic-translit' input method supports many new characters.
Common typographical characters available from Unicode were added to
`cyrillic-translit': punctuation marks, accented characters, fractions,
and others.

Chong Yidong's avatar
Chong Yidong committed
395
** Emacs now supports serial port access on GNU/Linux, Unix, and
396 397 398
Windows.  The new command `serial-term' starts an interactive terminal
on a serial port.  The serial port can be configured at runtime with
the mode-line mouse menu.
399

Chong Yidong's avatar
Chong Yidong committed
400
** Menu Bar changes
401

Chong Yidong's avatar
Chong Yidong committed
402 403 404 405 406
*** In the Options menu, the "Set Default Font" item applies the
selected font to the `default' face on all frames, not just the
current frame.  Furthermore, if Emacs is compiled with both GTK and
Fontconfig support, the "Set Default Font" item uses the GTK font
selection dialog instead of an Emacs pop-up menu.
407

Chong Yidong's avatar
Chong Yidong committed
408 409
*** The font setting chosen by "Set Default Font" is saved if the
"Save Options" item is used.
410

411 412 413
*** The Tools menu contains a new Encryption/Decryption submenu.
This contains commands provided by EasyPG, the newly-included
interface to GnuPG (see New Modes and Packages).
414

415 416 417
*** In the Options menu, the "Truncate Long Lines in the Buffer" entry
has been replaced with a submenu offering three different ways to
handle long lines: truncation, continuation at the window edge, and
418
the new word wrapping behavior (see Editing Changes, below).
419

Dan Nicolaescu's avatar
Dan Nicolaescu committed
420 421 422 423
*** Improvements to menus for major and minor modes
More major and minor modes now have a mode specific menu, and existing
mode menus have been improved to include more functionality.

Chong Yidong's avatar
Chong Yidong committed
424
** Mode-line changes
425

Chong Yidong's avatar
Chong Yidong committed
426 427
*** The mode-line displays a `@', instead of `-', if the
default-directory for the current buffer is on a remote machine.
428

Chong Yidong's avatar
Chong Yidong committed
429 430
*** The mode-line displays a mode menu when mouse-1 is clicked on a
minor mode, in the same way as it already did for major modes.
431

Chong Yidong's avatar
Chong Yidong committed
432 433
*** The `mode-line-emphasis' face is used to highlight certain
mode-line information (e.g. waiting for a VC command to finish).
434

Dan Nicolaescu's avatar
Dan Nicolaescu committed
435
*** The mode-line tooltips have been improved to provide more details.
436

Dan Nicolaescu's avatar
Dan Nicolaescu committed
437 438 439
*** The VC, line/colum number and minor mode indicators on the mode
line are now interactive: mouse-1 can be used on them to pop up a menu.

440 441
** File deletion can make use of the Recycle Bin or system Trash folder.
Set `delete-by-moving-to-trash' non-nil to use this.  Deleted files
442
and directories will then be sent to the Recycle Bin on Windows, and
443 444
to `trash-directory' on other systems.

Chong Yidong's avatar
Chong Yidong committed
445
** Directory-local variables can now be defined.
446 447 448
By default, Emacs looks in .dir-locals.el for directory-local
variables.  For more information, see `dir-locals-set-directory-class'
and `dir-locals-set-class-variables'.
449

450 451 452 453 454 455 456
** Emacs can now use `auth-source' for authentication.
`smtpmail' and `url' (Tramp and Gnus also) use `auth-source' to obtain
login names and passwords.  The match, if found, is reported
in *Messages* with the password blanked out.

** `where-is-preferred-modifier' can specify your favorite modifier.

457

458
* Startup Changes in Emacs 23.1
459

460 461 462 463 464 465
** The option `inhibit-startup-screen' (with aliases to old names
`inhibit-splash-screen' and `inhibit-startup-message') doesn't inhibit
display of the initial message in the *scratch* buffer.  If you don't
want to display the initial message in the *scratch* buffer at startup,
you can set the option `initial-scratch-message' to nil.

466 467 468 469
** New user option `initial-buffer-choice' specifies what to display
after starting Emacs: startup screen, *scratch* buffer, visiting a
file or directory.

470 471 472 473
** New alias `argv' for `command-line-args-left'
This is a convenience alias, so that one can write `(pop argv)'
inside of --eval command line arguments in order to access
following arguments.
474 475

** The abbrev file is no longer read at startup in batch mode.
476 477 478 479 480 481

** Emacs now supports invocation by an X session manager.
It can save a session and restore it later.  See the documentation of
the functions `emacs-session-save' and `emacs-session-restore'.
(Actually, this feature was introduced with Emacs 22, but it was not
documented.)
482

483
* Incompatible Editing Changes in Emacs 23.1
Kim F. Storm's avatar
Kim F. Storm committed
484

485 486 487
** In Dired, `dired-flag-garbage-files' is rebound from `&' to `%&'
on the regexp command prefix map.

488 489 490 491
** In Dired-x, all command guesses for ! are now added to the default
list accessible by M-n instead of pushing all guesses temporarily into
the history list.

492 493 494 495
** In Isearch mode, a special case of typing `C-w' at the beginning of
the minibuffer that toggles word search (i.e. using key sequences
`C-s RET C-w' or `C-s M-e C-w') is obsolete.  You can use the global key
`M-s w' to start word search, or type `M-s w' in Isearch mode to
496 497
toggle word search.  To start nonincremental word search you can now use
`M-s w RET' and `M-s w C-r RET' instead of `C-s RET C-w' and `C-r RET C-w'.
498

Juri Linkov's avatar
Juri Linkov committed
499 500 501 502 503 504 505
** In Info, `Info-search' is unbound from `M-s' to allow using `M-s w'
for word search as well as other search commands from the global prefix
key `M-s'.  `Info-search' is still bound to `s', and also incremental
search commands `C-s', `C-M-s', `C-r', `C-M-r' are available for searching
through multiple Info nodes, together with their nonincremental versions
`C-s RET', `C-r RET', `C-M-s RET', `C-M-r RET', `M-s w RET'.

506 507 508
** In Text mode, `center-line' and `center-paragraph' are rebound from
`M-s' and `M-S' to global keys `M-o M-s' and `M-o M-S' on the global
prefix map `M-o', which is intended for such formatting commands.
509

Reiner Steib's avatar
Reiner Steib committed
510
** The following input methods were removed in Emacs 22.2, but this was
Juanma Barranquero's avatar
Juanma Barranquero committed
511
not advertised: danish-alt-postfix, esperanto-alt-postfix,
Reiner Steib's avatar
Reiner Steib committed
512 513 514 515
finnish-alt-postfix, german-alt-postfix, icelandic-alt-postfix,
norwegian-alt-postfix, scandinavian-alt-postfix, spanish-alt-postfix,
and swedish-alt-postfix.  Use the versions without "alt-", which are
identical.
516

Richard M. Stallman's avatar
Richard M. Stallman committed
517

518
* Editing Changes in Emacs 23.1
Richard M. Stallman's avatar
Richard M. Stallman committed
519

520 521 522
** The C-n and C-p line-motion commands now move by screen lines,
taking continued lines and variable-width characters into account.
Setting `line-move-visual' to nil reverts this to the previous
523 524
behavior (i.e., motion by logical lines based on buffer contents
alone).
525

Chong Yidong's avatar
Chong Yidong committed
526
** C-x C-c now invokes `save-buffers-kill-terminal', and C-z now
527
invokes `suspend-frame'.  These changes are for compatibility with the
Chong Yidong's avatar
Chong Yidong committed
528
new multi-tty support (see `Improved X Window System support' above).
529

Chong Yidong's avatar
Chong Yidong committed
530
** Mark changes
531

532
*** Transient Mark mode is now on by default.
533

534
*** mark-even-if-inactive now defaults to t
535

536 537
*** When Transient Mark mode is on, C-SPC C-SPC pushes a mark without
activating it.
538

539 540
*** When Transient Mark mode is on, M-q now fills the region if the
region is active.  Otherwise, it fills the current paragraph.
541

542 543
*** When Transient Mark mode is on, M-$ now checks spelling of the
region if the region is active.  Otherwise, it checks spelling of the
Juri Linkov's avatar
Juri Linkov committed
544
word at point.
545

546 547
*** When Transient Mark mode is on, TAB now indents the region if the
region is active.
548 549 550 551

*** The variable `use-empty-active-region' controls whether an empty
active region in Transient Mark mode should make commands operate on
that empty region.
552 553

** Temporarily active regions
554

555 556 557 558
*** The new variable shift-select-mode, non-nil by default, controls
shift-selection.  When Shift Select mode is on, shift-translated
motion keys (e.g. S-left and S-down) activate and extend a temporary
region, similar to mouse-selection.
559

560 561 562 563 564 565 566
*** Temporarily active regions, created using shift-selection or
mouse-selection, are not necessarily deactivated in the next command.
They are only deactivated after point motion commands that are not
shift-translated, or after commands that would ordinarily deactivate
the mark in Transient Mark mode (e.g., any command that modifies the
buffer).

567
** Minibuffer and completion changes
568

569 570 571 572 573 574 575 576 577 578 579 580
*** Emacs may ask for confirmation before opening a non-existent file
or buffer.  By default, Emacs requests confirmation if you type RET
immediately after TAB, and the resulting input is not an existing file
or buffer; this usually happens when the minibuffer input did not
complete far enough and you entered RET by mistake.  In that case,
Emacs puts the message "[Confirm]" in the minibuffer; type RET again
to create the file or buffer.

The new variable confirm-nonexistent-file-or-buffer determines whether
Emacs asks for confirmation.  The default value is `after-completion'.
If you change it to t, Emacs always asks for confirmation; if you
change it to nil, Emacs never asks for confirmation.
581

582 583 584 585 586 587 588 589 590 591 592 593
*** The rules for performing completion have been changed.
When generating completion alternatives, Emacs now takes the
minibuffer text after point, if any, into account: this text is
treated as a substring of the remaining part of the completion
alternative (i.e., the part not matched by the minibuffer text before
point).  If no completion alternatives are found this way, Emacs
attempts to perform partial-completion.  If still no completion
alternatives are found, we fall back on the Emacs 22 rules for
performing completion.

The new variable `completion-styles' can be customized to choose your
favorite completion style.
594

595 596 597 598 599 600
*** When M-n in the minibuffer reaches the end of the list of defaults,
it adds the completion list to the end, so next M-n continues putting
completion items to the minibuffer.  The same principle applies to
incremental search commands as well: C-s or C-M-s starts searching
the default values and after the end of defaults they continue
searching minibuffer completion items.
601

Chong Yidong's avatar
Chong Yidong committed
602
*** Minibuffer input of shell commands now comes with completion.
603

Chong Yidong's avatar
Chong Yidong committed
604 605
*** In the `C-x d' (Dired) prompt, typing M-n gives the visited file
name of the current buffer.
606

Chong Yidong's avatar
Chong Yidong committed
607 608 609 610 611
*** In the M-! (shell-command) prompt, M-n provides some default commands.
These are guessed using the file extension of the current file, based
on the file-handlers specified in the operating system's `mailcap'
file.  The ! command in Dired (dired-do-shell-command) works
similarly, using the file displayed on the current line.
612 613 614

*** A list of regexp default values is available via M-n for `occur',
`keep-lines', `flush-lines' and `how-many'.  This list includes the active
Juri Linkov's avatar
Juri Linkov committed
615 616
region in transient-mark-mode, the word under the cursor, the last Isearch
regexp, the last Isearch string and the last replacement regexp.
617

618 619 620 621 622
*** When enable-recursive-minibuffers is non-nil, operations which use
switch-to-buffer (such as C-x b and C-x C-f) do not fail any more when
used in a minibuffer or a dedicated window.  Instead, they fallback on
using pop-to-buffer, which will use some other window.  This change
has no effect when enable-recursive-minibuffers is nil (the default).
623

Juri Linkov's avatar
Juri Linkov committed
624 625 626
*** Isearch started in the minibuffer searches in the minibuffer history.
Reverse Isearch commands (C-r, C-M-r) search in previous minibuffer
history elements, and forward Isearch commands (C-s, C-M-s) search in
627 628 629 630
next history elements.  When the reverse search reaches the first history
element, it wraps to the last history element, and the forward search
wraps to the first history element.  When the search is terminated, the
history element containing the search string becomes the current.
631

632 633
*** The variable read-file-name-completion-ignore-case overrides
completion-ignore-case for file name completion.
634

635 636
*** The variable read-buffer-completion-ignore-case overrides
completion-ignore-case for buffer name completion.
637

638 639
*** The new command `minibuffer-force-complete' chooses one of the
possible completions, rather than stopping at the common prefix.
640

641 642 643
*** If `completion-auto-help' is `lazy', Emacs shows the completions
buffer only on the second attempt to complete.  This was already
supported in `partial-completion-mode'.
644

645
** Face changes
646

647 648
*** S-down-mouse-1 now pops up a menu for changing the font and text
size of the default face in the current buffer.  The face is changed
Chong Yidong's avatar
Chong Yidong committed
649
via face remapping (see Lisp changes, below).
650

651 652 653
*** New commands to change the default face size in the current buffer.
To increase it, type `C-x C-+' or `C-x C-='.  To decrease it, type
`C-x C--'.  To restore the default (global) face size, type `C-x C-0'.
654 655 656 657 658 659 660
These work via Text Scale mode, a new minor mode.

The final key in the above commands may be repeated without the
leading `C-x', e.g. `C-x C-= C-= C-=' increases the face height by
three steps.  Each step scales the height of the default face by the
value of the variable `text-scale-mode-step'.

661 662 663
*** The commands buffer-face-mode and buffer-face-set can be used to
remap the default face in the current buffer.  See "Buffer Face mode",
under New Modes and Packages.
Glenn Morris's avatar
Glenn Morris committed
664

Chong Yidong's avatar
Chong Yidong committed
665
** Primary selection changes
666

667 668
*** You can disable kill ring commands from accessing the primary
selection by setting `x-select-enable-primary' to nil.
669

670 671 672 673 674 675 676 677
** Continuation lines can now be wrapped at word boundaries
(word-wrapping).  This is controlled by the new per-buffer variable
`word-wrap'.  Word wrapping does not take place if continuation lines
are not shown, e.g. if truncate-lines is non-nil.  The most convenient
way to enable word-wrapping is using the new minor mode Visual Line
mode; in addition to setting `word-wrap' to t, this rebinds some
editing commands to work on screen lines rather than text lines.  See
New Modes and Packages, below.
Chong Yidong's avatar
Chong Yidong committed
678

679
** Window management changes
680

681 682
*** truncate-partial-width-windows now accepts integer values, which
specify a minimum window width for partial-width windows, below which
683
lines are truncated.  The default has been changed to 50.
684 685 686

*** The new command balance-windows-area balances windows both
vertically and horizontally.
687

Martin Rudalics's avatar
Martin Rudalics committed
688 689 690
*** pop-to-buffer now always sets input focus when the popped-to window
is on a different frame.

Chong Yidong's avatar
Chong Yidong committed
691
** Miscellaneous changes:
692

Chong Yidong's avatar
Chong Yidong committed
693 694
*** C-l is bound to the new command recenter-top-bottom, rather than recenter.
This moves the current line to window center, top and bottom on
Chong Yidong's avatar
Chong Yidong committed
695
successive invocations.
696

Chong Yidong's avatar
Chong Yidong committed
697
*** scroll-preserve-screen-position also preserves the column position.
698

Chong Yidong's avatar
Chong Yidong committed
699 700 701
*** If `yank-pop-change-selection' is t, rotating the kill ring also
updates the selection or clipboard to the current yank, just as M-w
would do so with the text it copies to the kill ring.
702

Chong Yidong's avatar
Chong Yidong committed
703 704 705 706 707 708 709 710
*** C-M-% now shows replacement as it would look in the buffer, with
`\N' and `\&' substituted according to the match.  Old behavior can be
restored by customizing `query-replace-show-replacement'.

*** The command shell prompts for the default directory, when it is
called with a prefix and the default directory is a remote file name.
This is because some file name handlers (like ange-ftp) are not able to
run processes remotely.
711

Chong Yidong's avatar
Chong Yidong committed
712 713
*** The new command kill-matching-buffers kills buffers whose name
matches a regexp.
714

715 716 717
*** The value of comment-style now defaults to `indent'.
Thefore, comment-start markers are inserted at the current indentation
of the region to comment, rather than the leftmost column.
718

719 720
*** The new commands `pp-macroexpand-expression' and
`pp-macroexpand-last-sexp' pretty-print macro expansions.
721

722 723
*** The new command `set-file-modes' allows to set file's mode bits.
The mode bits can be specified in symbolic notation, like with GNU
724 725
Coreutils, in addition to an octal number.  `chmod' is a new
convenience alias for this function.
Eli Zaretskii's avatar
Eli Zaretskii committed
726

Eli Zaretskii's avatar
Eli Zaretskii committed
727 728 729
*** `next-error-recenter' specifies how next-error should recenter the
visited source file.  Its value can be a number (for example, 0 for
top line, -1 for bottom line), or nil for no recentering.
730

731 732
*** When typing in a password in the echo area, C-y yanks the current
kill into the password.
733

734 735
*** Tooltip frame parameters `font' and `color' in `tooltip-frame-parameters'
are ignored.  Customize the `tooltip' face instead.
736

Dan Nicolaescu's avatar
Dan Nicolaescu committed
737
*** `mkdir' is a new convenience alias for `make-directory'.
Chong Yidong's avatar
Chong Yidong committed
738 739

* New Modes and Packages in Emacs 23.1
740 741 742 743 744

** Auto Composition Mode is a minor mode that composes characters
automatically when they are displayed.  It is globally on by default.
It uses `auto-composition-function' (default `auto-compose-chars').

Chong Yidong's avatar
Chong Yidong committed
745
** Bubbles, a new game, is similar to SameGame.
746 747 748 749 750 751 752 753

** Buffer Face mode is a minor mode for remapping the default face in
the current buffer.  The variable `buffer-face-mode-face' specifies
the face to remap to.  The command `buffer-face-set' prompts for a
face name, sets `buffer-face-mode-face' to it, and enables
buffer-face-mode.  See "Face changes", under Editing Changes, for a
description of face remapping.

Juri Linkov's avatar
Juri Linkov committed
754 755
** butterfly flips the desired bit on the drive platter.
See http://xkcd.com/378/
756

757 758
** bug-reference.el provides clickable links to bug reports.

Chong Yidong's avatar
Chong Yidong committed
759 760
** dbus.el provides D-Bus language bindings.
D-Bus is an inter-process communication mechanism for applications
761
residing on the same host.  See the manual for details.
Chong Yidong's avatar
Chong Yidong committed
762

763
** DocView mode allows viewing of PDF, PostScript and DVI documents.
764 765
One can also search for a regular expression in the document.  For
details, see the commentary in doc-view.el.
Chong Yidong's avatar
Chong Yidong committed
766

767 768 769 770
PDF and DVI files are now opened in Doc View mode by default.

In Postcript mode, C-c C-c launches Doc View minor mode for viewing
the postscript file.
771

772 773 774 775
** EasyPG provides an interface to the GNU Privacy Guard (GnuPG).
It includes a GnuPG keyring browser, cryptographic operations on
regions and files, and automatic encryption of *.gpg files.  For
details, see the EasyPG Assistant User's Manual.
Chong Yidong's avatar
Chong Yidong committed
776 777 778 779 780 781 782

** json.el is a library for parsing and generating JSON
(JavaScript Object Notation), a lightweight data-interchange format.

** linum.el is a new minor mode to display line numbers for the
current buffer.

783 784 785 786 787 788
** mairix.el is an interface to mairix, a free tool for indexing and
searching locally stored mail.  It allows you to query mairix and
display the search results with Rmail, Gnus and VM.  Note that there
is an existing Gnus back end, nnmairix.el, which should be used with
Maildir/MH setups.

789
** minibuffer-depth-indicate-mode shows the minibuffer depth in the prompt.
Chong Yidong's avatar
Chong Yidong committed
790 791 792 793 794 795 796 797 798 799 800 801 802

** nXML Mode
This is a new mode for editing XML documents.  It allows a schema to
be associated with the XML document being edited, using Relax NG as
the schema language.  The schema is used to provide two key features:

*** Continuous validation.  nXML validates as you type, highlighting
any invalid parts of your document.

*** Completion.  nXML can assist you in entering an element name,
attribute name or data value by using information about what is
allowed by the schema in that context.

803 804 805 806 807 808
** proced.el provides a Dired-like interface for operating on
processes.  Proced makes an Emacs buffer containing a listing of the
current processes.  You can use the normal Emacs commands to move
around in this buffer, and special Proced commands to operate on the
processes listed.  It is currently only functional on GNU/Linux,
MS-Windows and Solaris.
Chong Yidong's avatar
Chong Yidong committed
809 810 811 812 813

** Remember Mode is a mode for jotting down things to remember.
Notes can be saved to a Diary file.  For details, see the Remember
Manual.

814
** RST mode is a major mode for editing reStructuredText files.
815

Chong Yidong's avatar
Chong Yidong committed
816 817
** Ruby mode is a major mode for Ruby files.

Chong Yidong's avatar
Chong Yidong committed
818 819 820 821
** Visual Line mode provides support for editing by visual lines.
It turns on word-wrapping in the current buffer, and rebinds C-a, C-e,
and C-k to commands that operate by visual lines instead of logical
lines.  This is a more reliable replacement for longlines-mode.
822 823
This can also be turned on using the menu bar, via
Options -> Line Wrapping in this Buffer -> Word Wrap
Chong Yidong's avatar
Chong Yidong committed
824

Michael Albinus's avatar
Michael Albinus committed
825 826 827 828
** xesam.el is an implementation of Xesam, an interface to (desktop)
search engines like Beagle, Strigi, and Tracker.  The Xesam API
requires D-Bus for communication.

Chong Yidong's avatar
Chong Yidong committed
829 830 831 832 833
** zeroconf.el offers service discovery and service publishing
interfaces according to the zeroconf specification.  It communicates
with Avahi, a zeroconf implementation, via D-Bus messages on systems
which have installed this software.

834 835 836 837 838 839 840 841 842
** There is a new `whitespace' package.
(The pre-existing one has been renamed to `old-whitespace'.)
Now, besides reporting bogus blanks, the whitespace package has a
minor mode and a global minor mode to visualize blanks (TAB, (HARD)
SPACE and NEWLINE).  The visualization is made via faces and/or display
table.  It can also indicate lines that extend beyond a given column,
trailing blanks, and empty lines at the start or end of a buffer.
See `whitespace-style' for more details.  The `whitespace-action' option
specifies what to do when a buffer is visited, killed, or written.
843

Chong Yidong's avatar
Chong Yidong committed
844 845 846 847

* Changes in Specialized Modes and Packages in Emacs 23.1

** Abbrev has been rewritten in Elisp and extended with more flexibility.
848

Stefan Monnier's avatar
Stefan Monnier committed
849
*** New functions: abbrev-get, abbrev-put, abbrev-table-get, abbrev-table-put,
850
    abbrev-table-p, abbrev-insert, abbrev-table-menu.
851

Stefan Monnier's avatar
Stefan Monnier committed
852
*** Special hook `abbrev-expand-functions' obsoletes `pre-abbrev-expand-hook'.
853

Stefan Monnier's avatar
Stefan Monnier committed
854 855
*** `make-abbrev-table', `define-abbrev', `define-abbrev-table' all take
    extra arguments for arbitrary properties.
856

Stefan Monnier's avatar
Stefan Monnier committed
857
*** New variable `abbrev-minor-mode-table-alist'.
858

Stefan Monnier's avatar
Stefan Monnier committed
859
*** `local-abbrev-table' can hold a list of abbrev-tables.
860

Stefan Monnier's avatar
Stefan Monnier committed
861
*** Abbrevs have now the following special properties:
862
    `:count', `:system', `:enable-function', `:case-fixed'.
863

Stefan Monnier's avatar
Stefan Monnier committed
864 865 866 867
*** Abbrev-tables have now the following special properties:
    `:parents', `:case-fixed', `:enable-function', `:regexp',
    `abbrev-table-modiff'.

Chong Yidong's avatar
Chong Yidong committed
868
** Apropos
869

Chong Yidong's avatar
Chong Yidong committed
870
*** `apropos-library' describes the elements defined in a given library.
871

Chong Yidong's avatar
Chong Yidong committed
872
*** Set `apropos-compact-layout' is you want a more compact (but wider) layout.
Martin Rudalics's avatar
Martin Rudalics committed
873

Chong Yidong's avatar
Chong Yidong committed
874
** Archive Mode has basic support to browse Rar archives.
875 876
Note, however, that the free version of the unrar command only handles
versions 1 and 2 of the Rar format.
Martin Rudalics's avatar
Martin Rudalics committed
877

Chong Yidong's avatar
Chong Yidong committed
878
** BibTeX mode
Juri Linkov's avatar
Juri Linkov committed
879

Chong Yidong's avatar
Chong Yidong committed
880
*** New command `bibtex-initialize' (re)initializes BibTeX buffers.
Juri Linkov's avatar
Juri Linkov committed
881

Chong Yidong's avatar
Chong Yidong committed
882 883
*** New `bibtex-entry-format' options `whitespace', `braces', and
`string', disabled by default.
Juri Linkov's avatar
Juri Linkov committed
884

Chong Yidong's avatar
Chong Yidong committed
885 886
*** New variable `bibtex-cite-matcher-alist' contains rules to
identify cited keys in BibTeX entries, used by `bibtex-find-crossref'.
887

Chong Yidong's avatar
Chong Yidong committed
888
*** Command `bibtex-url' allows multiple URLs per entry.
Glenn Morris's avatar
Glenn Morris committed
889

Chong Yidong's avatar
Chong Yidong committed
890
** Calendar and diary
Juri Linkov's avatar
Juri Linkov committed
891

Chong Yidong's avatar
Chong Yidong committed
892 893 894 895
*** There is a new date style, `iso', essentially year/month/day.
The variable `european-calendar-style' is obsolete - use `calendar-date-style'.
Similarly, the commands `american-calendar' and `european-calendar'
should be replaced by `calendar-set-date-style'.
Stefan Monnier's avatar
Stefan Monnier committed
896

Chong Yidong's avatar
Chong Yidong committed
897 898 899 900 901 902 903
*** The calendar namespace has been rationalized.
All functions and variables now begin with a `calendar-', `diary-', or
`holiday-' prefix.  The various calendar systems have secondary
prefixes, eg `calendar-french-'.  The old names you are likely to use
directly still exist, for the time being, as aliases, but please start
using the new names.

904 905 906 907 908 909 910 911
*** The whitespace in the calendar layout can be customized.
See the variables:
calendar-left-margin, calendar-intermonth-spacing, calendar-column-width,
calendar-day-header-width, and calendar-day-digit-width.

*** Text (e.g. ISO weeks) can be displayed between the calendar months.
See the variables calendar-intermonth-header and calendar-intermonth-text.

Chong Yidong's avatar
Chong Yidong committed
912 913 914 915 916
*** The function `holiday-chinese' computes holidays on the Chinese calendar.
It has been used to add items to the list `holiday-oriental-holidays'.

*** `diary-remind' accepts a negative number -DAYS as a shorthand for
the list (1 2 ... DAYS).
917

918 919 920 921 922 923 924 925
** Change Log mode

*** The new command C-c C-f (change-log-find-file) finds the file
associated with the current log entry.

*** The new command C-c C-c (change-log-goto-source) goes to the
source code associated with a log entry.

Dan Nicolaescu's avatar
Dan Nicolaescu committed
926
** Compile and grep modes
927

Dan Nicolaescu's avatar
Dan Nicolaescu committed
928 929 930
*** The mode-line entry for the *compilation* and *grep* buffer is color coded.
It has different colors for to show that: (a) the command is still
running, (b) successful completion, (c) error.
931

Dan Nicolaescu's avatar
Dan Nicolaescu committed
932
*** compilation-auto-jump-to-first-error tells `compile' to jump to
933
the first error encountered during compilations.
934

935 936
*** compilation-scroll-output accepts a new value, `first-error', which
says to stop auto scrolling at the first error that occurs.
937

Dan Nicolaescu's avatar
Dan Nicolaescu committed
938
*** The `cc' alias for C++ files in `grep-file-aliases' has been
Glenn Morris's avatar
Glenn Morris committed
939
improved.  `hh' can be used to match C++ header files and `cchh' both
Dan Nicolaescu's avatar
Dan Nicolaescu committed
940 941
C++ sources and headers.

942 943 944 945 946 947 948 949 950
** Copyright

*** You can specify your copyright holders' names.
Only copyright lines with holders matching `copyright-names-regexp' are
considered for update.

*** Copyrights can be at the end of the buffer.
This is controlled by `copyright-at-end-flag' (used by, e.g., change-log-mode).

Chong Yidong's avatar
Chong Yidong committed
951
** Custom
952

Chong Yidong's avatar
Chong Yidong committed
953
*** defcustom accepts new keyword arguments, `:safe' and `:risky', which
954 955
set a variable's `safe-local-variable' and `risky-local-variable' property.

Chong Yidong's avatar
Chong Yidong committed
956
** Diff mode
957